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View Code? Open in Web Editor NEWHome Page: http://gremlinrestclient.readthedocs.org/en/latest/
License: MIT License
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Creating a Edge
Hi Dave,
I am trying to create a edge but the weight property is not working. Even if I specify the weight its creating a edge without the property.
I used your below example
>>> d = {"name": "dave", "label": "person"}
>>> p = {"name": "python", "label": "lang"}
>>> e = (d, "LIKES", p, {'weight': 1})
>>> graph.create(e)
I traced the gremlin query which was being generated. You can see the weight property is missing.
{"gremlin": "v0 = graph.addVertex(label, p0, 'name', p1, );v1 = graph.addVertex(label, p2, 'name', p3, );e0 = v1.addEdge('LIKES', v0, );graph.tx().commit();[[v0,v1], [e0]];", "bindings": {"p2": "lang", "p3": "python", "p0": "person", "p1": "dave"}, "language": "gremlin-groovy"}
Thanks,
Duplicate Vertices created by readme sample code
Hi Dave,
When I'm running against tinkergraph I get duplicate vertices with the last example when starting with a clean database. See below for code, console output and reply from server using http://localhost:8182/?gremlin=g.V()
Also Id seems to be created as a property, which doesn't look right.
Will try sample on titan too and let you know.
Other than than that pretty cool library and better than gremlin console if we can solve the duplicates.
Cheers
Peter
Code
client = gremlinrestclient.GremlinRestClient()
graph = gremlinrestclient.TinkerGraph()
d = {"name": "dave", "label": "person"}
coll = graph.create(d)
dave, = coll.vertices # Unpack tuple of length 1
print(dave)
print(coll)
coll = graph.create(
{"name": "python", "label": "lang"},
(dave, "LIKES", 0, {'weight': 1}))
print(coll)
resp = client.execute("g.V()")
print(resp)Console output
Response(status_code=200,
data=[
{
u'properties': {
u'name': [
{
u'id': 1,
u'value': u'dave'
}
]
},
u'type': u'vertex',
u'id': 0,
u'label': u'person'
},
{
u'properties': {
u'name': [
{
u'id': 3,
u'value': [
{
u'id': 1,
u'value': u'dave'
}
]
}
]
},
u'type': u'vertex',
u'id': 2,
u'label': u'person'
},
{
u'properties': {
u'name': [
{
u'id': 5,
u'value': u'python'
}
]
},
u'type': u'vertex',
u'id': 4,
u'label': u'lang'
}
],
message={
},
metadata=u'')
Reply from server
{
"requestId": "2d571957-c321-408c-b2b1-765c67abf2b1",
"status": {
"message": "",
"code": 200,
"attributes": {
}
},
"result": {
"data": [
{
"id": 0,
"label": "person",
"type": "vertex",
"properties": {
"name": [
{
"id": 1,
"value": "dave"
}
]
}
},
{
"id": 2,
"label": "person",
"type": "vertex",
"properties": {
"name": [
{
"id": 3,
"value": [
{
"id": 1,
"value": "dave"
}
]
}
]
}
},
{
"id": 4,
"label": "lang",
"type": "vertex",
"properties": {
"name": [
{
"id": 5,
"value": "python"
}
]
}
}
],
"meta": {
}
}
}
Create a node with an attribute value as List
I have certain attributes in my dictionary whose value a list of string values, but I am unable to add those as an attribute in my graph.
a= {"name":"package.json", "label":"package", "used_in":["A","B","C"]}
>>> a
{'used_in': ['A', 'B', 'C'], 'name': 'package.json', 'label': 'package'}
>>> graph.create(a)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/site-packages/gremlinrestclient/graph.py", line 182, in create
return self._create(script, bindings)
File "/usr/lib/python2.7/site-packages/gremlinrestclient/graph.py", line 185, in _create
resp = self.execute(script, bindings=bindings)
File "/usr/lib/python2.7/site-packages/gremlinrestclient/client.py", line 40, in execute
resp = self._post(self._url, json.dumps(payload))
File "/usr/lib/python2.7/site-packages/gremlinrestclient/client.py", line 59, in _post
raise GremlinServerError(resp.status_code, msg)
gremlinrestclient.exceptions.GremlinServerError: Code [500]: SERVER_ERROR. A general server error occurred that prevented the request from being processed..
Error encountered evaluating script: v18 = graph.addVertex(label, p0, 'used_in', p1, 'name', p2, );[[v18], []];
Duplicate vertices
Maybe the same issue as #2, but I see some unexpected duplication in:
p = {"name": "python", "label": "lang"}
d = {"name": "dave", "label": "person"}
f = {"name": "frens", "label": "person"}
coll = graph.create(
(d, 'likes', p, {}),
(f, 'likes', p, {})
)
pprint(coll.vertices + coll.edges)I would expect both Dave and Frens to like python. But for some reason, two vertices are created with the name 'python'; one without the 'lang' label.
(Vertex(id=49264, label='person', properties={'name': [{'id': 'ff2-120g-4flx', 'value': 'dave'}]}),
Vertex(id=8344, label='lang', properties={'name': [{'id': '1zn-6fs-4flx', 'value': 'python'}]}),
Vertex(id=40964336, label='person', properties={'name': [{'id': 'ody5a-oe0a8-4flx', 'value': 'frens'}]}),
Vertex(id=53360, label='vertex', properties={'name': [{'id': 'g7i-1568-4flx', 'value': 'python'}]}),
Edge(id='odyji-oe0a8-4h79-1568', source_id=40964336, label='likes', target_id=53360, properties={}),
Edge(id='odyji-oe0a8-4h79-1568', source_id=40964336, label='likes', target_id=53360, properties={}))Maybe this is the expected behavior, if so, consider this a 'improvement request' or at least a 'documentation request' ;)
P.S. see #4 for a related issue also exposed by the code above regarding the edges.
Vertex mixup in creating edges
To 'work around' #3 I assumed the python vertex needs to be created before connecting other vertices to it:
p, = graph.create({"name": "python", "label": "lang"}).vertices
d = {"name": "dave", "label": "person"}
f = {"name": "frens", "label": "person"}
coll = graph.create(
(d, 'likes', p, {}),
(f, 'likes', p, {})
)
pprint(coll.vertices + coll.edges)But actually, Frens likes python twice!
(Vertex(id=28680, label='person', properties={'name': [{'id': '7i9-m4o-4flx', 'value': 'dave'}]}),
Vertex(id=40968432, label='person', properties={'name': [{'id': 'odzq6-oe3g0-4flx', 'value': 'frens'}]}),
Edge(id='oe04e-oe3g0-4h79-pgg', source_id=40968432, label='likes', target_id=32992, properties={}),
Edge(id='oe04e-oe3g0-4h79-pgg', source_id=40968432, label='likes', target_id=32992, properties={}))gremlin script does not work unless graph is set to TinkerGraph, Titan....
Hi,
I tried running the following snippet.
`>>> import gremlinrestclient
client = gremlinrestclient.GremlinRestClient()
resp = client.execute(
... "graph.addVertex(label, p1, 'name', p2)",
... bindings={"p1": "person", "p2": "dave"})
resp
Response(status_code=200, data=[{u'properties': {u'name': [{u'id': 226, u'value': u'dave'}]}, u'type': u'vertex', u'id': 225, u'label': u'person'}], message={}, metadata=u'')`
But this only works for me if I set graph variable to TinkerGraph.open()
>>> resp = client.execute( ... "graph = TinkerGraph.open(); graph.addVertex(label, p1, 'name', p2)", ... bindings={"p1": "person", "p2": "dave"})
And this is same for remaining functions.
Create node with an attribute value None
I have certain attributes in my dictionary whose value is None, but I am unable to add those as an attribute in my graph
Example
>>>a= {"name":"package.json", "label":"package", "source":None}
>>>graph.create(a)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/site-packages/gremlinrestclient/graph.py", line 182, in create
return self._create(script, bindings)
File "/usr/lib/python2.7/site-packages/gremlinrestclient/graph.py", line 185, in _create
resp = self.execute(script, bindings=bindings)
File "/usr/lib/python2.7/site-packages/gremlinrestclient/client.py", line 40, in execute
resp = self._post(self._url, json.dumps(payload))
File "/usr/lib/python2.7/site-packages/gremlinrestclient/client.py", line 59, in _post
raise GremlinServerError(resp.status_code, msg)
gremlinrestclient.exceptions.GremlinServerError: Code [500]: SERVER_ERROR. A general server error occurred that prevented the request from being processed..
Error encountered evaluating script: v16 = graph.addVertex(label, p0, 'source', p1, 'name', p2, );[[v16], []];
When I changed the source = "" it worked.
>>> a= {"name":"package.json", "label":"package", "source":""}
>>> graph.create(a)
Collection(vertices=(Vertex(id=16480, label=u'package', properties={u'source': [{u'id': u'4r0-cps-hdx', u'value': u''}], u'name': [{u'id': u'558-cps-1l1', u'value': u'package.json'}]}),), edges=())
Deleting vertex
Hi guys,
I'm currently struggling with trying to delete a vertex from my graph using gremlinrestclient. I tried executing queries as usual bot have no luck finding the right syntax. I tried g.V(123).remove(), g.V(123).delete() and various other notations but wasn't able to successfully delete a vertex from my graph.
Do you have any ideas on how to solve this problem?
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